生产线运输升降机自动化设计改良
摘要:本设计基于应用西门子S7-200 PLC和西门子MM420变频器组成的升降机控制和驱动系统，可以完成对升降机自动运行的智能化控制和管理，可以根据生产线的实际生产需要和具体工艺要求自动调整升降方向和速度快慢。也可以在变频器发生故障时自动将发生故障的电机切换到工频状态应急工作。
论文分析了运输升降机机械系统，自动控制系统的组成和工作原理，并根据设计的主次方面，详细阐述了运输升降机的各个关节的高端控制的实现方法。
本设计的整个系统自动化程度高，应用范围广，可以在多个行业与国内外各型生产线配套使用。
软件是工业PC在工业自动化过程控制系统中应用的关键。硬件性能的提高和价格的下降，以及标准化和功效更强、更好图形化操作系统的采用是促进工业PC软件发展的重要因素。当前，工业PC软件发展迅速，市场上已有数千家独立软件开发公司能供应在工业PC上运行的工业过程控制组态软件包，以满足急速增长的工业用户需要。工业PC上应用的工业过程控制组态软件包大多运行在OS/2、Windows和UNIX等标准操作系统上。工业过程控制应用软件大批量涌现，软件开发公司提供了大量可在工业PC之上运行，用于PLC、DCS等工业自动化控制系统的组态工具和图形化人机界面软件。许多PLC、DCS生产制造商开发的组态工具软件已成为其自动化控制系统的重要组成部分。他们采用工业PC代替专用工作站，用于建立实时数据库、控制回路、图形画面显示、报警记录、实时和历史数据趋势记录以及过程控制仿真等任务。现在，各种用于过程监视与控制、单元控制、工厂数据采集、过程优化控制、过程控制仿真、统计式质量控制(SQC)、统计式过程控制(SPC)以及专家系统控制的专用工业自动化控制软件包都有了巨大发展。IBM公司DAE等应用平台软件的出现和应用，为应用软件开发提供了统一工具。应用平台功能可从工业PC机间的数据交换到工厂范围内多个系统的协调，其标准数据接口允许计算机、控制设备和网络间互换数据信息，这些为集成信息管理与控制系统提供了极大方便。
关键词： 自动控制系统； 变频驱动系统 ； 输送带 ；光电传感器 ； 编码器； 变频器
Automatic Transport lifts Design on Automatic production line
Abstract:The design is based on application of Siemens S7-200 PLC and MM420 converter comprising Siemens lift control and drive systems, can be completed on the lift and operation of intelligent control and management may be based on the actual production line production needs and specific requirements of automatic adjustment take-off and landing direction and speed the pace. Inverters can also automatically event of the failure of the faulty electrical switch to the state of emergency frequency.
Papers of mechanical lift transport system, automatic control system and the working principles, and in accordance with the design sequence, elaborated on the various transport lifts in the high-end joint control of the method.
The design of the whole system a high degree of automation, wide application, in many industries and various types of production lines at home and abroad supporting use.
At present, the industrial process control automation company has introduced a large number of microprocessors, have both analog and digital signal output, and digital communication capabilities of intelligent field instrument. DCS manufacturers are using a variety of methods of the digital field devices integrated into its own system. Honeywell IACD such as two-way communication system for intelligent transmitter and TDC-3000 process controller connections and other components; ABB-Pele two-way communication system using 9600 baud FSK physical layer transmission, including its hardware input Fieldbus Fieldbus modules and terminal unit, software management procedures, including the transmitter and the transmitter function block; Moore company Mycro HART door connector can support 256 point-to-point connections or over 480 points connected intelligent transmitter; Foxbro companies addition to its own digital equipment integrated into the scene intelligent I / O system, also provides more than 60 other manufacturers, connecting doors connector.
Fieldbus standard, from the bottom-up equipment to achieve the interconnection of different manufacturers, with the current technology development trend. At present, the development of fieldbus standard has been a high degree of international attention, is integrated industrial automation control system indispensable component. With the standardization of fieldbus communication technology development, the more intelligent DCS and control will shift downward, decentralized control equipment at the field level. They will DCS in the diagnosis and treatment provide a better platform, which enables more advanced DCS to open forms.
Key words: Automatic Control System ，Variable frequency drive system，
Conveyor belt ， Photoelectric sensor ， Encoder Inverters
目录
第一章 绪论
1.1 可编程序控制器的特点及应用···········································1
1.2 如何选购PLC产品 ························································2
1.3 输入回路的选择特点·······················································3
1.4 输出回路的选择特点·······················································4
1.5 软件编制······································································5
1.6 优化选择······································································5
第二章 运输升降机系统概述
2.1 运输升降机机械系统的组成··············································7
2.2 运输升降机的自动控制系统的组成·····································7
2.3 运输升降机的工作原理和控制要求·····································7
第三章 运输升降机自动控制系统设计
3.1 运输升降机机械系统的结构组成········································8
3.2 运输升降机的电机驱动系统的组成·····································11
3.3 运输升降机自动化控制系统的组成·····································15
第四章 运输升降机自动运行工艺流程的设计
4.1 运输升降机的外部传感器设置···········································20
4.2 运输升降机的停止状态位·················································20
4.3 运输升降机自动运行步骤设计···········································21
4.4 升降升降机精确平层的电气控制设计··································28
4.5 对升降机构电磁机械安全抱闸的控制设计····························29
第五章 运输升降机安全运行的设计
第六章 运输升降机的总体整合设计
6.1 系统选型······································································33
6.2 主要元器件的介绍··························································34
6.3 系统I/O分配·································································36
6.4 程序运行过程分析···························································37
6.5 程序的下载、安装和调试··················································39
第七章 运输升降机的设计特点
第八章 运输升降机的设计注意事项
第九章 总结
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